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Description

Trying to perform a multi-pass place and route (MPPR), howeverthe menu selection under the Design Menu is greyed out.

Solution

1

If you're using 2.1i Software:

You must have a Version OR Revision selected in order to select the option of running a Multi-Pass Place and Route. Having the project name highlighted will not give you access to MPPR.

If you're using 1.5i Software or older:

You must have a Version selected in order to select the option of running a Multi-Pass Place and Route. Having the project name or revision highlighted will not give you access to MPPR.

2

MPPR can only operate on Xilinx FPGA families: XC3000a, XC4000e,XC4000ex, XC4000XL, XC5200 and Spartan. It cannot operate on CPLD's: XC7000, XC9500. This may be another reason why the optionis greyed out.